<template>
  <div class="container">
    <div class="app-container">
      <div class="left">
        <el-input
        v-model="queryParams.keyword"
         style="margin-bottom:10px" 
         type="text" 
         prefix-icon="el-icon-search"
         @input="changeValue"
         placeholder="输入员工姓名全员搜索"
         />
        <!-- 树形组件 -->
        <el-tree 
        node-key="id"
        ref="deptTree"
        :data="depts"
         :props='defaultProps'
         default-expand-all
         :expand-on-click-node="false"
         highlight-current
         @current-change="selectNode"
         />
      </div>
      <div class="right">
        <el-row class="opeate-tools" type="flex" justify="end">
          <el-button v-permission="'add-employee'" size="mini" type="primary" @click="$router.push('/employee/detail')">添加员工</el-button>
          <el-button size="mini" v-permission="'excel-employee'" @click="showExcelDialog = true">excel导入</el-button>
          <el-button size="mini" @click="exportEmployee">excel导出</el-button>
        </el-row>
        <!-- 表格组件 -->
        <el-table :data="list">
          <el-table-column label="头像" align="center" prop="staffPhoto">
            <template v-slot="{row}">
              <el-avatar v-if="row.staffPhoto" :src="row.staffPhoto" :size="30"/>
              <span class="username" v-else>{{ row.username.charAt(0) }}</span>
            </template>
          </el-table-column>
          <el-table-column label="姓名"  prop="username"/>
          <el-table-column label="手机号" sortable prop="mobile"/>
          <el-table-column label="工号" sortable prop="workNumber"/>
          <el-table-column label="聘用形式" prop="formOfEmployment">
            <template v-slot="{row}">
            <span v-if="row.formOfEmployment === 1">正式</span>
            <span v-else-if="row.formOfEmployment === 2">非正式</span>
            <span v-else>无</span>
            </template>
          </el-table-column>
          <el-table-column label="部门"  prop="departmentName"/>
          <el-table-column label="入职时间" sortable prop="timeOfEntry"/>
          <el-table-column label="操作" width="280px">
            <template v-slot="{row}">
              <el-button type="text" size="mini" @click="$router.push(`/employee/detail/${row.id}`)">查看</el-button>
              <el-button type="text" size="mini" @click="btnRole(row.id)">角色</el-button>
              <el-popconfirm title="确认删除改行数据么？" @onConfirm="confirmDel(row.id)">
            <el-button type="text" size="mini" slot="reference" style="margin-left:10px">删除</el-button>
            </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页 -->
        <el-row type="flex" justify="end" align="middle" style="height:60px">
          <el-pagination
          layout="total,prev, pager, next"
          :total="total" 
          :current-page="queryParams.page"
          :page-size="queryParams.pagesize"
          @current-change="changePage"
          />
        </el-row>
      </div>
    </div>
    <!-- 放置导入组件 -->
    <import-excel :showExcelDialog.sync="showExcelDialog" @uploadSuccess="getEmployeeList"/>
    <el-dialog :visible.sync="showRoleDialog" title="分配角色">
      <!-- 弹层内容 -->
      <!-- checkbox -->
      <el-checkbox-group v-model="roleIds">
        <!-- 放置n个的checkbox  要指定checkbox的存储值-->
        <el-checkbox v-for="item in roleList" :key="item.id" :label="item.id">{{ item.name }}</el-checkbox>
      </el-checkbox-group>
      <!-- 确定和取消按钮 -->
      <el-row type="flex" justify="center" slot="footer">
        <el-col :span="6">
        <el-button size="mini" type="primary" @click="btnRoleOK">确定</el-button>
        <el-button size="mini" @click="showRoleDialog=false">取消</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script>
import {getDepartment} from '@/api/department'
import {getEmployeeList,exportEmployee,delEmployee,getEmployeeDetail,assignRole} from '@/api/employee'
import {transListToTreeData} from '@/utils'
import FileSaver from 'file-saver'
import ImportExcel from './components/import-excel.vue'
import {getEnableRoleList} from '@/api/employee'
import { TimeSelect } from 'element-ui'

export default {
  name: 'Employee',
  components:{
    ImportExcel
  },
  data() {
    return {
      total:0, //记录员工的总数
     depts:[],  //组织数据
     defaultProps:{
      label:'name',
      children:'children'
     },
    //  存储查询参数
     queryParams:{
      departmentId:null,
      page:1,
      pagesize:10,
      keyword:''
     },
     list:[], //存储员工列表数据
     showExcelDialog:false, //控制excel弹层的显示隐藏
     showRoleDialog:false, //用来控制角色弹层显示
     roleList:[],  //接受角色列表
     roleIds:[], //用来双向绑定的
     currentUserId:null   //用来记录当前点击的用户id
    }
  },
  created() {
   this.getDepartment()
  },
  methods: {
    async getDepartment() {
      //递归方法 将列表转化成树形
      this.depts = transListToTreeData(await getDepartment(),0) 
      this.queryParams.departmentId = this.depts[0].id
      // 设置选中节点
      // 树组件渲染是异步的 等到更新完毕
      this.$nextTick(()=>{
        // 磁石意味着树渲染完毕
      this.$refs.deptTree.setCurrentKey(this.queryParams.departmentId)
    })    
    //这个时候参数 记录了id
    this.getEmployeeList()  
    },
    selectNode(node) {
      this.queryParams.departmentId = node.id  //重新记录了参数
      this.queryParams.page=1  //切换部门重新获取第一页
      this.getEmployeeList()

    },
    // 获取员工列表的方法
    async getEmployeeList() {
      const {rows,total} = await getEmployeeList(this.queryParams)
      this.list =rows
      this.total =total
    },
    // 切换页码
    changePage(newPage) {
      this.queryParams.page = newPage  //赋值新页码
      this.getEmployeeList()

    },
    // 输入值内容改变时触发
    changeValue() {
      //单位时间内只执行最后一次
      //this的实例上赋值了一个timer的属性
      clearTimeout(this.timer)   //清理上一次的定时器
      this.timer = setTimeout(() => {
        this.queryParams.page=1  //切换部门重新获取第一页
        this.getEmployeeList()
      }, 500);
    },
    /****
     * 到处员工的excel
     */
    async exportEmployee() {
      const result = await exportEmployee()  //导出所有的员工接口
      //FileSaver.saveAs(blob对象,文件名称)
      FileSaver.saveAs(result,'员工信息表.xlsx')// 下载文件
    },
    //删除员工
    async confirmDel(id) {
      await delEmployee(id)
      if(this.list.length === 1 && this.queryParams.page > 1) this.queryParams.page--
      this.getEmployeeList()
      this.$message.success('删除员工成功')
    },
    // 点击角色按钮弹出层
    async btnRole(id) {

      this.roleList = await getEnableRoleList()
      //记录当前点击的id 因为后边 确定取消要存储给对应的用户
      this.currentUserId = id
      const {roleIds} = await getEmployeeDetail(id)
      this.roleIds = roleIds
      this.showRoleDialog = true  //调整顺序

    },
    // 点击角色的确定
    async btnRoleOK() {
      await assignRole({
        id:this.currentUserId,
        roleIds:this.roleIds
      })
      this.$message.success('分配用户角色成功')
      this.showRoleDialog = false
    }
  }
}
</script>

<style lang="scss" scoped>
.app-container {
  background: #fff;
  display: flex;
  .left {
    width: 280px;
    padding: 20px;
    border-right: 1px solid #eaeef4;
  }
  .right {
    flex: 1;
    padding: 20px;
    .opeate-tools {
      margin:10px ;
    }
    .username {
      height: 30px;
      width: 30px;
      line-height: 30px;
      text-align: center;
      border-radius: 50%;
      color: #fff;
      background: #04C9BE;
      font-size: 12px;
      display:inline-block;
    }
  }
}

</style>
